EP0933864A3 - Electronic apparatus - Google Patents

Electronic apparatus Download PDF

Info

Publication number
EP0933864A3
EP0933864A3 EP99300630A EP99300630A EP0933864A3 EP 0933864 A3 EP0933864 A3 EP 0933864A3 EP 99300630 A EP99300630 A EP 99300630A EP 99300630 A EP99300630 A EP 99300630A EP 0933864 A3 EP0933864 A3 EP 0933864A3
Authority
EP
European Patent Office
Prior art keywords
voltage
power
feed
supply power
detecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99300630A
Other languages
German (de)
French (fr)
Other versions
EP0933864A2 (en
Inventor
Yoshifumi Seiko Instr. R&D Center Inc. Yoshida
Fumiyasu Seiko Instr. R&D Center Inc. Utsunomiya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of EP0933864A2 publication Critical patent/EP0933864A2/en
Publication of EP0933864A3 publication Critical patent/EP0933864A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00711—Regulation of charging or discharging current or voltage with introduction of pulses during the charging process
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electromechanical Clocks (AREA)
  • Dc-Dc Converters (AREA)

Abstract

An electronic apparatus (100) is realised in which functions are controlled in response to a detected feed power voltage, wherein feed power voltage can be detected even where the feed power, such as generated power, or feed power voltage of the power feed unit (10) is low. In order to achieve this, the apparatus comprises a power feed unit having a supply power or a voltage varying in time, a switching circuit (40) employed as boosting means for increasing a voltage of the supply power, a voltage detecting circuit (20) for detecting the voltage of the supply power increased by the boosting means and outputting a voltage detection signal; and a load circuit (30) operating on the supply power and changing a drive state responsive to the voltage detecting signal.
EP99300630A 1998-01-28 1999-01-28 Electronic apparatus Withdrawn EP0933864A3 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP1539498 1998-01-28
JP1539498 1998-01-28
JP3265098 1998-02-16
JP3265098 1998-02-16
JP32382498 1998-11-13
JP32382498A JP3657445B2 (en) 1998-01-28 1998-11-13 Electronics

Publications (2)

Publication Number Publication Date
EP0933864A2 EP0933864A2 (en) 1999-08-04
EP0933864A3 true EP0933864A3 (en) 2000-08-30

Family

ID=27280992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99300630A Withdrawn EP0933864A3 (en) 1998-01-28 1999-01-28 Electronic apparatus

Country Status (3)

Country Link
US (1) US6163141A (en)
EP (1) EP0933864A3 (en)
JP (1) JP3657445B2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3650276B2 (en) * 1998-10-22 2005-05-18 セイコーインスツル株式会社 Electronic portable equipment
JP4694681B2 (en) * 1999-11-26 2011-06-08 セイコーインスツル株式会社 Ultrasonic motor and electronic device with ultrasonic motor
JP4214649B2 (en) * 2000-02-08 2009-01-28 ソニー株式会社 Power supply device and pulse generator
US20020144164A1 (en) * 2001-02-13 2002-10-03 Yu-Nan Chen Efficiency-raising and power-saving procedure and its devices
TW200820166A (en) * 2006-10-27 2008-05-01 Beyond Innovation Tech Co Ltd Driving device and switching circuit thereof
US7579813B2 (en) * 2007-01-29 2009-08-25 Inventec Corporation Power regulator having a voltage regulator module and having a voltage buffer module to provide a constant voltage output
US8664931B2 (en) * 2011-06-13 2014-03-04 Perpetua Power Source Technologies, Inc. Self-optimizing energy harvester using generator having a variable source voltage
JP6904798B2 (en) * 2017-06-16 2021-07-21 エイブリック株式会社 Power supply

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107138A (en) * 1988-04-08 1992-04-21 Seikosha Co., Ltd. Integrated circuit with battery serving as power source having CMOS analog and digital circuits and regulated stepped up voltage source
EP0593257A2 (en) * 1992-10-12 1994-04-20 Nemic-Lambda Kabushiki Kaisha Boost converter
US5528087A (en) * 1992-04-23 1996-06-18 Nippondenso Co., Ltd. Power supply apparatus for efficient power conservation of a battery
US5565762A (en) * 1994-05-26 1996-10-15 Rohm Co., Ltd. DC/DC converter and audio device incorporating the same
US5598092A (en) * 1993-06-10 1997-01-28 Canon Kabushiki Kaisha DC-DC converter
US5831420A (en) * 1997-04-28 1998-11-03 Motorola, Inc. Pulse load averaging power converter

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0792506B2 (en) * 1984-11-21 1995-10-09 セイコーエプソン株式会社 Electronic clock
JPH0727039B2 (en) * 1986-04-09 1995-03-29 セイコーエプソン株式会社 Electronic clock
US5224025A (en) * 1992-04-21 1993-06-29 Wisconsin Alumni Research Foundation Forward converter with two active switches and unity power factor capability
EP0581989B1 (en) * 1992-08-05 1996-11-13 Siemens Aktiengesellschaft Switching regulator with regulation of at least an output voltage
SE500589C2 (en) * 1992-10-22 1994-07-18 Ericsson Telefon Ab L M Low-loss boost converter through limited back current in the main diode
US5307005A (en) * 1992-12-23 1994-04-26 International Business Machines Corporation Zero current switching reverse recovery circuit
US5461301A (en) * 1993-01-19 1995-10-24 Qualidyne Systems Dual slope soft start for pulse width modulator controllers used in power converters
US5313382A (en) * 1993-05-18 1994-05-17 At&T Bell Laboratories Reduced voltage/zero current transition boost power converter
US5404092A (en) * 1993-09-03 1995-04-04 Motorola, Inc. High power factor AC-DC converter with reactive shunt regulation
JPH07322529A (en) * 1994-05-23 1995-12-08 Nec Eng Ltd Solar cell power supply
JP3345519B2 (en) * 1994-06-08 2002-11-18 富士通株式会社 Power supply
US5663635A (en) * 1995-05-24 1997-09-02 Vlt Corporation Reverse energy transfer in zero-current switching power conversion
US5614811A (en) * 1995-09-26 1997-03-25 Dyalem Concepts, Inc. Power line control system
US5642267A (en) * 1996-01-16 1997-06-24 California Institute Of Technology Single-stage, unity power factor switching converter with voltage bidirectional switch and fast output regulation
JP3467962B2 (en) * 1996-03-29 2003-11-17 セイコーエプソン株式会社 Power control method, power control device, power generation device, and electronic device
US5804950A (en) * 1996-06-20 1998-09-08 Micro Linear Corporation Input current modulation for power factor correction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107138A (en) * 1988-04-08 1992-04-21 Seikosha Co., Ltd. Integrated circuit with battery serving as power source having CMOS analog and digital circuits and regulated stepped up voltage source
US5528087A (en) * 1992-04-23 1996-06-18 Nippondenso Co., Ltd. Power supply apparatus for efficient power conservation of a battery
EP0593257A2 (en) * 1992-10-12 1994-04-20 Nemic-Lambda Kabushiki Kaisha Boost converter
US5598092A (en) * 1993-06-10 1997-01-28 Canon Kabushiki Kaisha DC-DC converter
US5565762A (en) * 1994-05-26 1996-10-15 Rohm Co., Ltd. DC/DC converter and audio device incorporating the same
US5831420A (en) * 1997-04-28 1998-11-03 Motorola, Inc. Pulse load averaging power converter

Also Published As

Publication number Publication date
EP0933864A2 (en) 1999-08-04
US6163141A (en) 2000-12-19
JP3657445B2 (en) 2005-06-08
JPH11332091A (en) 1999-11-30

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